Question

how do political parties bring democratic reform

Answer 1

Typically, a political party is a politicalorganization seeking to influence government policy by nominating its own select candidates to hold seats in political office, via the process of electoral campaigning. ... In nonpartisan elections, each candidate is eligible for office on his or her own merits

Answer 2

Political parties bring democratic reforms in India because democratic reforms are needed because in India everyone has freedom of speech.

And not other than political parties can brings these kinds of reforms because political parties allow everyone to criticize what they have done and give permission to everyone to put their opinions on board.

Sometimes changes are required in a country to change its perspective and that will be known as democratic reforms.